[Qemu-discuss] response to BIOS int 0x13 calls

[bilsch]

I'm a low energy QEMU user.  I use it for running a 'hobby' OS that is 
little more than a boot sector.  It has a program that calls int 0x13 
ah=0x48 to get the number of sectors on the hard drive.  If the call 
returns CF=1 it means the call was unsuccessful (and presumably the # of 
sectors info is invalid).  If I copy the 'OS' containing this BIOS call 
to a partition on the actual hard drive and boot it, it returns CF=0 and 
# sectors = (a reasonable number).  If I run this OS in QEMU it returns 
CF=1 and # sectors = 0.  How do I get correct BIOS response in QEMU?